Performance comparison of zeotropic and azeotropic refrigerants in evaporation through inclined tubes

被引：9

作者：

Kundu, A. ^{[1
]}

Kumar, R. ^{[1
]}

Gupta, A. ^{[1
]}

机构：

[1] Indian Inst Technol Roorkee, Mech & Ind Engn, Uttarakhand 247667, India

来源：

10TH INTERNATIONAL CONFERENCE ON MECHANICAL ENGINEERING (ICME 2013) | 2014年 / 90卷

关键词：

refrigerants; R407C; R410A; alternatives; Zeotropic; Azeotropic; inclined tube; evaporation; HEAT-TRANSFER; PRESSURE-DROP; PURE;

D O I：

10.1016/j.proeng.2014.11.755

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Zeotropic and Azeotropic refrigerants are the feasible replacements to HCFC due to ecological tribulations; and the production of most widely used HCFC-22 has been banned by the Montreal Protocol and UNFCCC Regulation. This paper presents an experimental study on heat transfer characteristics in evaporation of zeotropic mixture R407C and quasi-azeotropic blend R410A through small diameter (ID 7.0 mm) smooth tube inclined at seven different angles from 0(0) to 90(0). Experimental data were acquired over an imposed heat flux range of 5-10 kW/m(2) and the refrigerant mass velocity was varied from 80 to 300 kg/m(2)s at an evaporating temperature range of -5(0)C to +8(0)C. The investigation verified that the heat transfer characteristic of R410A was better than R407C at all inclinations of the tube. (C) 2014 The Authors. Published by Elsevier Ltd.

引用

页码：452 / 458

页数：7